289485

Appears in sequences

• G.f.: exp( Sum_{n>=1} A055457(n) * 5^A055457(n) * x^n/n ) where 5^A055457(n) exactly divides 5*n.at n=23A195761
• a(n) = 16*n^3 - 36*n^2 + 30*n - 9.at n=26A341043